The BlueSpot 1/2" 7 PCE Alloy Wheel Sockets (17-27mm) are manufactured from chrome molybdenum. The sockets are designed for use with alloy wheels that have a 17, 19, 21, 22, 23, 24 or 27mm bolt. The sockets feature a protective nylon sleeve around the thin wall to avoid damage to the alloy wheel. The sockets are also colour coded so you can quickly and efficiently choose the correct socket for the wheel you are working on.Package Contents - 17mm, 19mm, 21mm, 22mm, 23mm, 24mm, 27mmManufactured from chrome molybdenum for increased durabilityColour codedComplete with handy carrying case for quick and easy storage